#include<stdio.h>
#include<string.h>

int main()
{
    FILE *fp = fopen("myfile","w");
    if(!fp)
    {
        printf("fopen error!\n");
    }
    const char *msg = "hello bit\n";
    int count = 5;
    while(count--)
    {
        fwrite(msg,strlen(msg),1,fp);

    }
    fclose(fp);
    return 0;
}